Greetings,

Hope everyone is keeping safe.

I would like to compute the Gini coefficient for a large number of regions by year.

I would like to generate a new variable and have tried the following loop;

Code:
foreach yr of numlist 1970/1972 {
    gen gini = . 
    qui ineqdeco income if year==`yr', by(group)  
    replace gini = $S_gini if year==`yr' 
}
However, I get the following error;

Code:
variable gini already defined
Any help will be highly appreciated. Thank you and keep safe!

Best,

Chiara

Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input byte group int(year income)
1 1970 1200
1 1970  720
1 1970 2160
2 1970 2400
2 1970 1440
2 1970 4800
3 1970 3480
3 1970 2616
3 1970    0
1 1971  360
1 1971 1200
1 1971  960
2 1971 2760
2 1971 3600
2 1971    0
3 1971 6000
3 1971  960
3 1971 3600
1 1972  600
1 1972 2472
1 1972  600
2 1972 1200
2 1972 4944
2 1972 7944
3 1972 6000
3 1972 2400
3 1972    0
end